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Katsuragi S, Tatsumi N, Matsumoto M, Narita J, Ishii R, Suginobe H, Tsuru H, Wang R, Kogaki S, Tanaka R, Ozono K, Okajima T, Ishida H. Pharmacological Alteration of Cellular Mechanical Properties in Pulmonary Arterial Smooth Muscle Cells of Idiopathic Pulmonary Arterial Hypertension. Cardiol Res 2021; 12:231-237. [PMID: 34349864 PMCID: PMC8297039 DOI: 10.14740/cr1282] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 06/18/2021] [Indexed: 12/25/2022] Open
Abstract
Background Idiopathic pulmonary arterial hypertension (IPAH) is a progressive disease caused by vascular remodeling of the pulmonary arteries with elevated pulmonary vascular resistance. Recently, various pulmonary vasodilator drugs have become available in the clinical field, and have dramatically ameliorated the prognosis of IPAH. However, little is known about how the mechanical properties of pulmonary arterial smooth muscle cells (PASMCs) are altered under drug supplementation. Methods Atomic force microscopy (AFM) was used to investigate the mechanical properties of PASMCs derived from a patient with IPAH (PAH-PASMCs) and a healthy control (N-PASMCs) which received the supplementation of clinically used drugs for IPAH: sildenafil, macitentan, and riociguat. Results PASMCs derived from PAH-PASMCs were stiffer than those derived from N-PASMCs. With sildenafil treatment, the apparent Young's modulus (E 0) of cells significantly decreased in PAH-PASMCs but remained unchanged in N-PASMCs. The decrease in E 0 of PAH-PASMCs was also observed in macitentan and riociguat treatment. The stress relaxation AFM revealed that the decrease in E 0 of PAH-PASMCs resulted from a decrease in the cell elastic modulus and/or increase in cell fluidity. The combination treatment of macitentan and riociguat showed an additive effect on cell mechanical properties, implying that this clinically accepted combination therapy for IPAH influences the intracellular mechanical components. Conclusions Pulmonary vasodilator drugs affect the mechanical properties of PAH-PASMCs, and there exists a mechanical effect of combination treatment on PAH-PASMCs.
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Affiliation(s)
- Shinichi Katsuragi
- Department of Pediatrics, Osaka University Graduate School of Medicine, Osaka, Japan.,Department of Pediatrics and Neonatology, Osaka General Medical Center, Osaka, Japan.,These authors contributed equally to this work
| | - Nao Tatsumi
- Graduate School of Information Science and Technology, Hokkaido University, Sapporo, Japan.,These authors contributed equally to this work
| | - Mizuki Matsumoto
- Graduate School of Information Science and Technology, Hokkaido University, Sapporo, Japan.,These authors contributed equally to this work
| | - Jun Narita
- Department of Pediatrics, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Ryo Ishii
- Department of Pediatrics, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Hidehiro Suginobe
- Department of Pediatrics, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Hirofumi Tsuru
- Department of Pediatrics, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Renjie Wang
- Department of Pediatrics, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Shigetoyo Kogaki
- Department of Pediatrics, Osaka University Graduate School of Medicine, Osaka, Japan.,Department of Pediatrics and Neonatology, Osaka General Medical Center, Osaka, Japan
| | - Ryosuke Tanaka
- Graduate School of Information Science and Technology, Hokkaido University, Sapporo, Japan
| | - Keiichi Ozono
- Department of Pediatrics, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Takaharu Okajima
- Graduate School of Information Science and Technology, Hokkaido University, Sapporo, Japan
| | - Hidekazu Ishida
- Department of Pediatrics, Osaka University Graduate School of Medicine, Osaka, Japan
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Lahm T. Taking it to heart: dissecting cardiopulmonary interactions in diseases of the lung and the cardiovascular system. Am J Physiol Lung Cell Mol Physiol 2020; 319:L547-L549. [PMID: 32783622 PMCID: PMC7518052 DOI: 10.1152/ajplung.00373.2020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Affiliation(s)
- Tim Lahm
- Division of Pulmonary, Critical Care, Sleep, and Occupational Medicine, Indiana University School of Medicine, Indianapolis, Indiana
- Department of Anatomy, Cell Biology, and Physiology, Indiana University School of Medicine, Indianapolis, Indiana
- Richard L. Roudebush Department of Veterans Affairs Medical Center, Indianapolis, Indiana
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